40405760

素因数分解:

$2^8\times 5^1\times {\mathrm{31567}}^1$

素因数の和:31588

約数の個数: 36

約数和(自身を含む): 96787488

約数和(自身を除く): 56381728

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 31567, 63134, 126268, 157835, 252536, 315670, 505072, 631340, 1010144, 1262680, 2020288, 2525360, 4040576, 5050720, 8081152, 10101440, 20202880, 40405760]

約数ペア:

[(1, 40405760), (2, 20202880), (4, 10101440), (5, 8081152), (8, 5050720), (10, 4040576), (16, 2525360), (20, 2020288), (32, 1262680), (40, 1010144), (64, 631340), (80, 505072), (128, 315670), (160, 252536), (256, 157835), (320, 126268), (640, 63134), (1280, 31567)]